Bean Brewers, Inc, a manufacturer of coffee makers, had the following activities, allocated costs, and allocation bases

$\backslash$table$[[$Activities$,$Allocated Costs,Allocation Base$],[$Account inquiry $($hours$),$$$79,000,2,300$ hours$],[$Account billing $($lines$),$$$36,000,15,000$ lines$],[$Account verification $($accounts$),$$$12,000,22,000$ accounts$],[$Correspondence $($letters$),$$$13,000,1,400$ letters$],[,,],[$The above activities are carried out at two of its regional offices,Northeast Office,$250$ hours$],[$Activities$,140$ hours,$7,000$ lines$],[$Account inquiry $($hours$),10,000$ lines,$600$ accounts$],[$Account billing $($lines$),1,800$ accounts,$100$ letters$],[$Account verification $($accounts$),80$ letters,$]]$

A$.$ $$929$

B $$743$

C$.$ $$16,714$

D$.$ $$5,571$